A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.
Classification: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 5920-00-808-6977
NSN 5915-01-605-5184
NSN 5935-00-217-8847
NSN 5935-00-245-8789
NSN 5935-00-654-6069
NSN 5930-00-233-5065
NSN 5930-01-015-1300
NSN 5998-00-707-5781
NSN 6145-00-461-1707
NSN 5965-00-317-1679
NSN 5835-00-275-0584
NSN 5835-00-451-2982